1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 public class Main {
18   public static class Inner {
19     // Use a <clinit> method to ensure we execute in the
20     // interpreter.
21     static {
Main.callMethodThatThrows()22       Main.callMethodThatThrows();
23     }
24   }
25 
main(String[] args)26   public static void main(String[] args) throws Exception {
27     System.loadLibrary(args[0]);
28     // Disables use of nterp.
29     Main.setAsyncExceptionsThrown();
30 
31     Thread.currentThread().setUncaughtExceptionHandler((th, e) -> {
32       System.out.println("Caught exception");
33       // Exit the test gracefully.
34       System.exit(0);
35     });
36     // This will throw at `callMethodThatThrows` and trigger deoptimization checks which we used
37     // to crash on.
38     new Inner();
39   }
40 
callMethodThatThrows()41   public static void callMethodThatThrows() {
42     // Ensures we get deoptimization requests.
43     Main.forceInterpreterOnThread();
44     throw new Error("");
45   }
46 
forceInterpreterOnThread()47   public static native void forceInterpreterOnThread();
setAsyncExceptionsThrown()48   public static native void setAsyncExceptionsThrown();
49 
50 }
51